<i>Mr. President and Gentlemen</i>:—This I consider "a red letter day " in my professional life's work, and more particularly from the very fact of having received so generous an invitation, through the Secretary of your Association, to read a paper on this auspicious occasion. We Canadians, as a whole, delight in noting the advance of our American neighbors, in almost every line of thought in medical and surgical science. The assembled wisdom of this Association from the great State of New York, almost a kingdom in itself, is only an index to the intellectual power to-day at work in almost every State of your prosperous republic. How gratifying it must be to con over such names as Rush, Mott, McDowell, Sims, Gross, Pancoast, Flint, Sayre, Thomas,Emmett, DaCosta, Bowditch, Goodell, Pepper, Weir Mitchell, Bull, McBurney and a host of others equally great, but too numerous to mention, who by their skill